JP2018027885A - Terahertz composite material and method for producing the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a terahertz composite material and a method for producing the same.SOLUTION: Provided are a terahertz(THz) composite material and a method for producing the same, in which the composite material comprises: nanocrystal silicon(nc-Si) of 50 to 65%; a natural silicon oxide of 6 to 10%; a natural silicate mineral of 4 to 8%; a natural carbonate mineral of 3 to 7%; and an auxiliary binder of 6 to 10%.The production method comprises: a step 1 where raw materials are prepared according to the ratios; a step 2 where the same is filtered; a step 3 where water is added, and polishing is performed till it is made into micro-nanometer; a step 4 where the water is dried; a step 5 where pulverizing(powdering) is performed; a step 6 where the same is charged to a heat-resistant crucible and is melted at a high temperature; a step 7 where the melt is charged to a mold(the inside of the mold is beforehand treated with a mold releasing agent); a step 8 where the surface is polished and is melted at a high temperature, and impurities floated up on the surface are removed; and a step 9 where the same is polished into a prescribed shape.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a composite material, and more particularly, to a method for manufacturing a terahertz (Tear Hertz, THz) composite material and a composition thereof.

  There are many far-infrared products at present, and they are applied by the 9th power of the Giga Hertz wave (10). This type of structure has been applied for a long time, but for a wide range of applications at a higher level, there is no suitable detector, so the application of terahertz waves has been limited. In order to provide a product more suitable for actual demand, the present inventor has researched and developed to solve the conventional problems in use.

In the late 80's of the 20th century, it was officially named THz wave (Tera Hertz wave 10 ¹² ) or THz wave beam (Terahertz wave beam), and before that, scientists called far infrared rays. The terahertz wave refers to an electromagnetic wave having a cycle in the range of 0.1 THz to 10 THz, and the wavelength range is 0.03 to 3 mm, and is located between the microwave and the infrared ray. In fact, more than a hundred years ago, scientists were studying this frequency band. In 1896 and 1897, Rubens and Nichols conducted research on the frequency band, and the infrared spectrum reached 9 μm (0.009 mm) and 20 μm (0.02 mm), followed by 50 μm. . For the next 100 years or so, far-infrared technology has been industrialized with many achievements. However, the research results and data of the terahertz frequency band are very limited because the sensitivity of the effective terahertz wave oscillation source and detector is mainly limited, and this frequency band is called THz gap. In the 1980s, new technologies were developed, new materials developed, and the development of technologies was particularly remarkable. The acquisition of a wide-band stable pulsed THz oscillation source became a regular technology, and THz technology achieved remarkable development. There is a big trend in research.

  The main object of the present invention is to provide a Tera Hertz (THz) composite material, discover a special process, and combine it with the composition to emit beneficial terahertz far-infrared rays (growth light waves), It is intended to make it easier for people to use.

  To achieve the above object, the present invention provides a composite material. The composition of the composite material is 50-65% nanocrystalline silicon (nc-Si), 6-10% natural silicon oxide, 4-8% natural silicate mineral, 3-7% natural Contains carbonate mineral and 6-10% auxiliary binder.

  Natural silicon oxide is basalt, natural silicate minerals are quartz and tourmaline, natural carbonate minerals are limestone and dolomite, and limestone includes meteorite and calcite. Nanocrystalline silicon is smaller than 500 nanometers. The auxiliary binder is sodium silicate (Na2SiD3).

  The present invention further provides a method for producing a composite material, and includes the following steps. 1. Prepare raw materials according to the ratio. 2. Sift. 3. Add water until water is added to make the micro / nanometer. 4. Water is evaporated. 5. Grind (powder). 6 Put in a heat-resistant crucible and melt at high temperature. 7. Put the melt into a mold (the inside of the mold is first treated with a release agent). 8. The surface is polished to remove impurities that have been melted at a high temperature and floated on the surface. 9. After being polished into ultrafine particles and polished, the surplus containing water is dried and collected by sieving.

  The present invention further provides a terahertz composite material and a manufacturing method thereof. The composition of the composite material is 50-60% nanocrystalline silicon (nc-Si), 6-10% natural silicon oxide, 4-8% natural silicate mineral, 3-7% natural carbonic acid. Salt mineral, 2-5% charcoal allotrope, and 6-10% auxiliary binder.

  Natural silicon oxide is basalt, natural silicate mineral is quartz or tourmaline, natural carbonate mineral is calcite, and carbon is graphite or an artificial product. Nanocrystalline silicon is smaller than 500 nanometers. The auxiliary binder is sodium silicate.

  The manufacturing method of a composite material includes the following steps. 1. Prepare raw materials according to the ratio. 2. Sift. 3. Add water until water is added to make the micro / nanometer. 4. Water is evaporated. 5. Grind (powder). 6 Put in a heat-resistant crucible and melt at high temperature. 7. Put the melt into a mold (the inside of the mold is first treated with a release agent). 8. The surface is polished to remove impurities that have been melted at a high temperature and floated on the surface. 9. After being polished into ultrafine particles and polished, the surplus containing water is dried and collected by sieving.

  The present invention discovers special processes and makes them more usable by people by emitting terahertz far-infrared rays (growth light waves) beneficial to living organisms in combination with compositions.

It is an emissivity-wavelength diagram of simple substance silicon according to the present invention. It is an emissivity-wavelength diagram of carbon according to the present invention. It is a reflectance-cycle figure of the finished product A which concerns on this invention. It is a reflectance-cycle diagram of the finished product B which concerns on this invention. It is an emissivity-wavelength diagram which compared this invention with the prior art.

  In an embodiment of the present invention, a Tera Hertz (THz) composite material is composed of 50-60% nanocrystalline silicon (nc-Si) as a main raw material and 6-10% natural silicon oxide. And 4-8% natural silicate mineral, 3-7% natural carbonate mineral, 2-5% charcoal allotrope, and 6-10% auxiliary binder. Silicon oxide is basalt, natural silicate minerals are quartz and tourmaline, natural carbonate minerals are limestone and dolomite, limestone includes meteorites and calcite, carbon is graphite or artificial products, The component of the auxiliary binder is sodium silicate (water glass) (FIG. 3 shows the reflectance-cycle diagram of the finished product A).

  In another embodiment of the present invention, the Tera Hertz (THz) composite material is composed of 50-65% nanocrystalline silicon (nc-Si) as the main raw material and 6-10% natural silicon. Contains oxide, 4-8% natural silicate mineral, 3-7% natural carbonate mineral, and 6-10% auxiliary binder. Silicon oxide is basalt, natural silicate minerals are quartz and tourmaline, natural carbonate minerals are limestone and dolomite, limestone contains meteorite and calcite (2-5% charcoal allotropic body Is preferably added), the auxiliary binder component is sodium silicate (water glass). (FIG. 4 shows the reflectance-cycle diagram of finished product B).

  The main raw material of the constitution of the present invention is 50 to 65% nanocrystalline silicon (nc-Si). Nanocrystalline silicon is smaller than 500 nanometers.

  Silicon is a chemical element, and its chemical symbol is Si. It is the second most abundant element in the crust, accounting for 25.7% of the total mass constituting the crust. Crystalline silicon has a dark blue color, is very brittle, is a typical semiconductor, and is chemically very stable. It is difficult to react with substances other than hydrogen fluoride at room temperature. Nanocrystalline silicon (nc-Si) and amorphous silicon (a-Si) are also silicon allotropes.

  The difference between nanocrystalline silicon and morphous silicon is that nanocrystalline silicon has small amorphous silicon crystal grains. In comparison, polycrystalline silicon is composed of silicon crystal granules that are completely separated from the grain boundaries. Nanocrystalline silicon is also called microcrystalline silicon (μc-Si). The only difference is the size of the crystal granules. Most granule-sized materials are actually fine-grained polycrystalline silicon, and therefore emit far-infrared waves more widely at higher levels by nanometerization of nanocrystal silicon. Is possible.

Silicon is “quartz ore” (scientific name: silicon dioxide SiO ₂ ), an element of minerals everywhere. The semiconductor characteristics of silicon (silicon is a non-conductor in normal conditions, the energy level between conductors and non-conductors is very short, and is a typical semiconductor that becomes a conductor once energy or heat is applied) It is chemically very stable and silicon ore (silicon dioxide) is purified and used in physical processes. The purity of silicon is increased by removing "oxygen" elements and impurities in quartz by methods such as powdering, ultrafine polishing, calcination, electrode decomposition, pickling, extraction, crystal rearrangement recrystallization. After pure silicon is nanometerized, wider far-infrared waves are radiated at higher levels, and silicon exhibits a high emissivity at wavelengths of 5 · m (FIG. 1) and above.

  Additive 1 is 6-10% natural silicon oxide and is basalt. The main component of basalt is sodium aluminosilicate or calcium aluminosilicate, which is mainly composed of silicon dioxide, aluminum oxide, iron oxide, calcium oxide, magnesium oxide, potassium oxide, and sodium oxide. The silicon dioxide content is the highest, accounting for about 45% to 52%. For this reason, natural silicon isoform is formed by natural silicon oxide, the far-infrared wavelength region finally shows an average high emissivity due to the difference in the component materials, and the terahertz wavelength is shown by the silicon isoform. The shortage is effectively compensated.

Additive 2 is a natural silicate mineral with 4-8% anions [SiO ₄ ] ^-4 . The complexity of silicate is in the anion, and the basic structural unit of the anion is the same silicate tetrahedron as SiO ₂ . The silicate mineral is characterized by having different silicon and oxygen ratios in the structure, which determines the structure and components of each silicate and forms a polymerization action. That is, one or more silicate tetrahedra are combined in a manner that shares oxygen, resulting in the action of one larger anion, and the radiative properties of the action of the larger anion are the anions of the main constituent Determined by ionic material. The wide wavelength range is widened by the characteristics of the anion, and the emissivity has a great effect on the increase. Natural silicate minerals are quartz (reticulated silicates) and tourmaline (cyclic silicates).

Additive 3 is a natural carbonate minerals with 3-7% of anionic carbonate [CO _3] ^-2. Carbonate mineral refers to limestone, and the main anion is an anion carbonate [CO ₃ ] ^-2 mineral with calcite (calcium carbonate) as the main component. Limestone often contains dolomite, gypsum, magnesite, pyrite, opal, chalcedony, quartz, sea green stone, and fluorite. Carbonate is a compound composed of carbonate ion [CO ₃ ] ^-2 and other metal ions, metal cations are mainly sodium, calcium, magnesium, barium, rare earth elements, iron, copper, lead, zinc, manganese The main component that becomes an anion by combining metals is carbonate carbonate mineral (calcite / calcium carbonate), and the radiation characteristics are determined by the main component anion substance, Widen the wavelength range. Natural carbonate minerals are limestone and dolomite, and limestone includes meteorites and calcite.

  Additive 4 is a 2-5% charcoal allotrope. The amorphous carbon is formed by an irregular arrangement of carbon atoms in an amorphous form. Amorphous carbon is in the form of powder and the main component of carbon is present in the form of graphite at normal pressure. Each carbon atom is all bonded to the other three carbon atoms to form a regular hexagonal planar structure. This reticulated planar structure is layered and has a weak vander waals' force between each layer. For this reason, the properties of graphite are flexible and can also be used as a lubricant (can easily slide between layers). Each carbon atom in graphite has one outer shell delocalized electron, and a π-electron cloud extending in the whole plane is jointly formed. For this reason, electrical energy is conducted on each covalent bond plane of graphite. This makes the overall carbon conductivity lower than most metals. The inclusion of delocalized electrons makes graphite more stable than diamond under standard conditions. Carbon is graphite or an artificial product.

  Carbon allotrope (including graphite (natural), bamboo charcoal, carbon nanotube). An amorphous form of carbon is an irregular representation of carbon atoms in an amorphous form. The wavelength of carbon generally exhibits a broad wavelength and a high average emissivity (FIG. 2). Bamboo charcoal and carbon nanotubes are both artificial products.

The auxiliary binder is 4-7% artificial sodium silicate (chemical formula: Na ₂ SiO ₃ ). Sodium silicate is commonly called water glass, and is formed by combining alkali metal oxide and silicon dioxide. is there. It is a soluble alkali metal silicate material, an isoform of an artificial silicon bond, and the silicon dioxide network formed after curing supplements the network lost in the sintering process, and sodium is radiated. There is a certain amount of assistance in terms of characteristics. Sodium silicate is alkaline, and alkalinity is mainly negative potential, and the radiation characteristics of negative potential are determined by the anionic substance of the main component, and the characteristics of the anion greatly increase the wide wavelength range. Be compensated.

In the present invention, high-purity silicon, amorphous carbon, and an allotropic body of carbon are combined with an anionic substance contained in a carbonate [CO ₃ ] ^-2 mineral. The anion ([SiO ₄ ] ^-4 ) of the natural silicate mineral is alkaline, and the colorless sodium silicate is transparent and sticky and is alkaline. The alkalinity is mainly a negative potential of an anion. Basalt is mainly composed of silicon dioxide, natural oxide aluminum oxide, iron oxide, calcium oxide, magnesium oxide, potassium oxide, sodium oxide, natural oxide structure, natural silicate mineral, carbonate mineral, and sodium silicate ( The component of sodium salt contained in (water glass), component of charcoal allotrope contained in carbonate mineral, silicate mineral, carbonate mineral, sodium silicate, and silicon allotrope contained in basalt In the far-infrared wavelength region, it finally shows a high average emissivity, and the silicon isoform effectively compensates for the shortage of the terahertz wavelength. A composite material is formed which generates a terahertz wave (Tera Hertz, THz). Since it has the best proportion distribution and can be obtained from natural minerals, it is easy to obtain raw materials, there is no need for purification by special processing, and the utility is demonstrated by accurate blending. It is a material in which infrared rays of 2 μm to 1000 μm reach an average emissivity of 0.9 or more even at room temperature.

  Application field: 1. Widen wide wavelength, increase heat radiation ability, reduce heat capacity. 2. The ability to transmit terahertz waves expands capillaries by resonance with molecules, improves blood circulation, and promotes metabolism. 3. Purification of water quality by terahertz waves, suppression of bacterial growth, and refining of water molecule clusters by resonance. 4. Terahertz far-infrared rays (growth light waves) that are beneficial to earth creatures are emitted by special technology.

  Production method: 1. Raw materials are blended in the ratio of the two embodiments described above. 2. Sift. 3. Add water and polish until micronanometer. 4. Dry the moisture. 5. Grind (powder). 6). Place in a heat-resistant crucible and melt at high temperature. 7. Put the melt into the mold (the mold is first treated with a release agent). 8. The surface is polished to remove impurities floating on the surface melted at high temperature. 9. After polishing into a predetermined shape and polishing, the excess containing water is dried and collected by sieving to make additives such as paint and plastic.

  Measurement conditions: 1, Equipment: Inspection with terahertz spectrometer. Used to obtain terahertz reflection spectrum (Reflectance). 2. Environment: A space to dry. 3. Verify the absorption in the range of 1.5-3 THz, which removes water vapor by filling with nitrogen. 4. Signal cycle: pulse width 100FSEC (Pulse width 100sec), overlap cycle 50MHz (Repetition rate 50MHz), scanning speed 1.6mm / sec (Scan velocity) 1.6mm / sec (sampling rate 10khz)), resolution 5. 7 GHz (Resolution 5.7 GHz (0.191 cm-2). (Measurement results are shown in FIGS. 3 and 4)

  In conclusion, referring to FIG. 3, FIG. 4 and FIG. 5, the terahertz wave reflectivity of the material according to the present invention reaches between 87% and 95%, and the prior art shown by the broken line in FIG. The corresponding curve is shown to be much lower than the present invention.

  Total energy = absorbed energy + reflected energy + transmitted energy = radiant energy (between 95% and 87%).

  When the frequency is 0.2 THz-3 THz and the cycle is 200 Ghz (gigahertz) to 3 Thz (terahertz), there is a preferable reflectance. When the wavelength is 1000 μm to 2 μm, the reflectance is close to 1.

  It is proved in the following table that the wavelength is 5 μm to 1 mm.

  The solid line indicates the reflectance of the wavelength according to the present invention, and both are higher than 95% and close to 1. A broken line indicates a wavelength according to the conventional technique, which is only around 10 μm, indicating that the applicability is low. Taken together, the present invention is a manufacturing method and composition that is completely different from the prior art, by adopting a new formulation and manufacturing method, thereby providing applicability and practicality with extremely favorable emissivity.

Claims (8)

  The composition of the composite material is 50-65% nanocrystalline silicon, 6-10% natural silicon oxide, 4-8% natural silicate mineral, 3-7% natural carbonate mineral and 6-10% A terahertz composite material comprising an auxiliary binder.   The natural silicon oxide is basalt, the natural silicate mineral is quartz or tourmaline, the natural carbonate mineral is calcite, and the size of nanocrystalline silicon is less than 500 nanometers, according to claim 1, The terahertz composite material described.   The terahertz composite material according to claim 1, wherein the auxiliary binder is sodium silicate.   (1) The raw material is prepared in the ratio described in claim 1 above, (2) sifted, (3) polished until it is micronized by adding water, (4) water is evaporated, (5 ) Powdered, (6) put in a heat-resistant crucible and melted at high temperature, (7) put the melt into the mold (the inside of the mold is first treated with a release agent), (8) the surface is Impurities that have been polished and melted at a high temperature and removed from the surface are removed. (9) Polished to a predetermined shape, and after polishing, the excess containing water is dried and collected by sieving. The method for producing a terahertz composite material according to claim 1.   The composition of the composite material is 50-60% nanocrystalline silicon, 6-10% natural silicon oxide, 4-8% natural silicate mineral, 3-7% natural carbonate mineral, 2-5% A terahertz composite material comprising a charcoal allotropic body and 6 to 10% of an auxiliary binder.   Natural silicon oxide is basalt, natural silicate mineral is quartz or tourmaline, natural carbonate mineral is calcite, carbon is graphite or artificial product, nanocrystal silicon size is less than 500 nanometers The terahertz composite material according to claim 5, wherein   The terahertz composite material according to claim 5, wherein the auxiliary binder is sodium silicate.   (1) The raw materials are blended in the proportions described in claim 5 above, (2) sifted, (3) polished until added to water and micronanometer, (4) water evaporated, (5 ) Powdered, (6) put in a heat-resistant crucible and melted at high temperature, (7) put the melt into the mold, the mold was first treated with a release agent, and (8) the surface was polished Removing impurities which have been melted at a high temperature and floating on the surface, and (9) polished into a predetermined shape, and after polishing, the excess containing water is dried and collected by sieving. The method for producing a terahertz composite material according to claim 5.

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